Michael Paquier <michael(at)paquier(dot)xyz>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Cees van Zeeland <cees(dot)van(dot)zeeland(at)freedom(dot)nl>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-bugs(at)lists(dot)postgresql(dot)org
I improved the comment, referenced the CLDR bug report, and replaced the funky character with \uNNNN notation, as requested. And pushed (master/18-to-be only). Ευχαριστώ!